Radio Button

Description

The Radio Button block lets you change the value of the connected
parameter during simulation. You can specify a list of values and labels and then select
the value for the parameter from that list. Use the Radio Button block
with other Dashboard blocks to build an interactive dashboard of controls and indicators
for your model.

Double-clicking the Radio Button block does not open its dialog box
during simulation and when the block is selected. To edit the block's parameters, you
can use the Property Inspector, or you can right-click the block
and select Block Parameters from the context menu.

Connecting Dashboard Blocks

Dashboard blocks do not use ports to connect to make connections. To connect dashboard
blocks to variables and block parameters, use connect mode. Connect mode facilitates the
process of connecting dashboard blocks in your model, especially when you want to connect
multiple blocks at once. If you only want to connect a single dashboard block, you can also
use the Connection table in the block dialog box.

Tip

You can modify dashboard block connections in your model during normal and accelerator
mode simulations.

Note

Dashboard blocks cannot connect to variables until you update the model diagram. To
connect dashboard blocks to variables or modify variable values between opening your
model and running a simulation, update the model diagram using
Ctrl+D.

To enter connect mode, pause on an unconnected dashboard block and click the
Connect button that appears above it.

In connect mode, when you select one or more signals or blocks, a list of parameters and
variables available for connection appears. Select a variable or parameter from the list to
connect to the selected dashboard block. To connect another dashboard block, pause on
another dashboard block and click the Connect button above it. Then,
make a selection of signals and blocks in your model and choose a variable or parameter to connect.

When you finish connecting the dashboard blocks in your model, click the
Exit button in the upper-right of the canvas.

Tip

You can hide the message shown on unconnected blocks using the
set_param function with the ShowInitialText
block parameter. The message also disappears when you connect the block.

Limitations

Except the Dashboard Scope block and the Display block,
dashboard blocks can only connect to real scalar signals.

You cannot use the Connection table to connect a dashboard block
to a block that is commented out. When you connect a dashboard block to a commented
block using connect mode, the dashboard block does not display the connected value until
the you uncomment the block.

Dashboard blocks cannot connect to signals inside referenced models.

When you simulate a model hierarchy, dashboard blocks inside referenced models do not
update.

Dashboard blocks do not support rapid accelerator simulation.

Some signals are not available during accelerator mode simulations. To view these
signals using a dashboard block, mark the signal for logging.

When you specify a block parameter value by indexing a variable array, the parameter
does not appear in the Connection table. For example, a block
parameter defined as engine(1) using the variable
engine does not appear in the table.

To access the parameter in the Connection table, assign the
indexed value to a scalar variable, such as engine_1. Then, use the
scalar variable to define the block parameter.

When you connect a dashboard block to a variable or parameter during simulation, the
data for that variable or parameter is not logged to the Simulation Data Inspector. To
log variable and parameter data to the Simulation Data Inspector, connect the dashboard
block to the variable or parameter prior to simulation.

When you simulate a model in external mode with the Default parameter
behavior set to Inlined, dashboard blocks can
appear to change parameter and variable values. However, the change does not propagate
to the simulation. For example, Gain blocks display changes made to the
Gain parameter using the dashboard blocks, but the
Gain value used in the simulation does not change.

Parameters

Select the variable or block parameter to control using the
Connection table. To connect the block to a signal:

Make a selection in the model that includes one or more blocks.

Select the variable or parameter you want to connect.

Click Apply.

To facilitate understanding and debugging your model, you can connect Dashboard
blocks to variables and parameters in your model during simulation.

Note

To see workspace variables in the connection table, update the model diagram
using Ctrl+D.

Programmatic Use

To programmatically connect a dashboard block to a tunable parameter or a
variable, use a Simulink.HMI.ParamSourceInfo object. The
Simulink.HMI.ParamSourceInfo object contains four
properties. Some of the properties apply to connecting dashboard blocks to
parameters, and some apply to connecting dashboard blocks to variables. Not all
fields have a value for a connection because a given dashboard block connects to
either a parameter or a variable.

Block Parameter:Binding

Type:Simulink.HMI.ParamSourceInfo

Default:[]

States — Set of states to select for connected parameterscalar and character vector

Set of states from which to select a value for the connected parameter. Each
State consists of a State Value and a
State Label.

State Value — Value assigned to the connected
variable or parameter when you select the state with the corresponding
Label.

State Label — Label for each state. You can use
the Label to display the value the connected
parameter takes when the switch is positioned at the bottom, or you can
enter a descriptive text label.

Click the + button to add additional
States.

The default configuration for the block includes these
States.

State Value

State Label

0

Label1

1

Label2

2

Label3

Programmatic Use

To programmatically configure the States for a block, use
an array of structures containing the fields Value and
Label. Include a structure in the array for each state
you want to configure on the block.

You can use an enumerated data type that pairs a numeric value with each enumeration to configure the state values and labels for the block. To specify the states for the block using an enumerated data type, first select the Enumerated Data Type option. Then, specify the name of the enumerated data type in the text box. The definition for the specified enumerated data type must be saved on the MATLAB path or in the base workspace.

Example: myEnumType

Programmatic Use

To programmatically specify the state labels and values for the block using an enumerated data type, specify 'on' for the UseEnumeratedDataType parameter and the name of the enumerated data type for the EnumeratedDataType parameter.

Block Parameter:UseEnumeratedDataType

Type: string or character array

Values:'on' | 'off'

Default:'off'

Block Parameter:EnumeratedDataType

Type: string or character array

Default:''

Group Name — Radio Button group nameRadioButtonGroup (default) | character vector

Name for the group of values displayed on the Radio Button
block. Unlike the Block Name and
Label, the Group Name always
shows on the Radio Button block.

Example: Input Amplitude

Programmatic Use

Block Parameter:ButtonGroupName

Type: string or character
array

Default:'Group'

Label — Block label positionTop (default) | Bottom | Hide

Position of the block label. When the block is connected to an element in the
model, the label is the name of the connected element.

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